Particle decays and CPT non-invariance in cosmology

Details Particle decays and CPT non-invariance in cosmology Particle decays and CPT non-invariance in cosmology

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982nuphb.204...35f&link_type=abstract

Nuclear Physics B, Volume 204, Issue 1, p. 35-44.

Physics

Nuclear Physics

17

Scientific paper

The effect of the expansion of the universe upon the rate of decay of a massive scalar particle is investigated. In the limit of weak coupling to the spacetime curvature, an expression is given for the average decay rate of such a particle. It is shown that in general this process is not CPT invariant. Several explicit models for the expansion are considered, and the application of the results to the early universe is discussed.
I would like to thank Alexander Vilenkin for helpful discussions.

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